Section 158(4) in The Representation of the People Act, 1951
(4)Subject to the provisions of sub-section (3), the deposit shall be forfeited if at an election where a poll has been taken, the candidate is not elected and the number of valid votes polled by him does not exceed one-sixth of the total number of valid votes polled by all the candidates or in the case of election of more than one member at the election, one-sixth of the total number of valid votes so polled divided by the number of members to be elected: Provided that where at an election held in accordance with the system of proportional representation by means of the single transferable vote, a candidate is not elected, the deposit made by him shall be forfeited if he does not get more than one-sixth of the number of votes prescribed in this behalf as sufficient to secure the return of a candidate.